f9f395c28b
Updated version of LGPL and FDL licenseheaders. Apply release phase licenseheaders for all source files. Reviewed-by: Trust Me
80 lines
2.6 KiB
C++
80 lines
2.6 KiB
C++
/****************************************************************************
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**
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** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
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** All rights reserved.
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** Contact: Nokia Corporation (qt-info@nokia.com)
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**
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** This file is part of the demonstration applications of the Qt Toolkit.
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**
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** $QT_BEGIN_LICENSE:LGPL$
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** GNU Lesser General Public License Usage
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** This file may be used under the terms of the GNU Lesser General Public
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** License version 2.1 as published by the Free Software Foundation and
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** appearing in the file LICENSE.LGPL included in the packaging of this
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** file. Please review the following information to ensure the GNU Lesser
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** General Public License version 2.1 requirements will be met:
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** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
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**
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** In addition, as a special exception, Nokia gives you certain additional
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** rights. These rights are described in the Nokia Qt LGPL Exception
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** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
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**
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** GNU General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU General
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** Public License version 3.0 as published by the Free Software Foundation
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** and appearing in the file LICENSE.GPL included in the packaging of this
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** file. Please review the following information to ensure the GNU General
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** Public License version 3.0 requirements will be met:
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** http://www.gnu.org/copyleft/gpl.html.
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**
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** Other Usage
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** Alternatively, this file may be used in accordance with the terms and
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** conditions contained in a signed written agreement between you and Nokia.
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**
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**
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**
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**
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**
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#ifndef TRACKBALL_H
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#define TRACKBALL_H
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#include <QtGui>
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#include <QtGui/qvector3d.h>
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#include <QtGui/qquaternion.h>
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class TrackBall
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{
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public:
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enum TrackMode
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{
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Plane,
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Sphere,
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};
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TrackBall(TrackMode mode = Sphere);
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TrackBall(float angularVelocity, const QVector3D& axis, TrackMode mode = Sphere);
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// coordinates in [-1,1]x[-1,1]
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void push(const QPointF& p, const QQuaternion &transformation);
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void move(const QPointF& p, const QQuaternion &transformation);
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void release(const QPointF& p, const QQuaternion &transformation);
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void start(); // starts clock
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void stop(); // stops clock
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QQuaternion rotation() const;
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private:
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QQuaternion m_rotation;
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QVector3D m_axis;
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float m_angularVelocity;
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QPointF m_lastPos;
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QTime m_lastTime;
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bool m_paused;
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bool m_pressed;
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TrackMode m_mode;
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};
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#endif
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